Breast cancer in a tertiary cancer center in India - An audit, with outcome analysis

• DOI: 10.4103/ijc.ijc_484_17
• Publication Date: 2018-08-23T11:16:57Z
• Authors: Tanuja Shet; Nita Nair; Vani Parmar; Rohini Havaldar; Sudeep Gupta; Ashwini Budrukkar; Rajiv Sarin; Meenakshi Thakur; Sangeeta Desai; Prabha Yadav; Rakesh jalali; Seema Gulia; Tabassum Wadasada...; Jaya Gosh; Jyoti Bajpai; Seema Kembhavi; Asawari Patil; Shalaka Joshi; Palak Popat; Venkatesh Rangarajan; Sneha Shah; Vaibhav Vanmali; Shabina Siddiqui; Indraneel Mittra; Rajendra Badwe
• Keywords: Adult; Aged, 80 and over; Adolescent; Receptor, ErbB-2; Breast Neoplasms; Middle Aged; Disease-Free Survival; 3. Good health; Gene Expression Regulation, Neoplastic; Tertiary Care Centers; Young Adult; 03 medical and health sciences; Treatment Outcome; 0302 clinical medicine; Humans; Female; Neoplasm Recurrence, Local; Mastectomy; Aged; Neoplasm Staging

Survival studies may serve as benchmarks to develop cancer-related policies and estimate baseline survival rates in a given patient population.We carried out a retrospective audit of cases managed in 2009 and now report the disease-free survival (DFS) in early breast cancer (EBC) and locally advanced breast cancer (LABC) in patients registered at a tertiary cancer center in India.The study included 2192 patients with breast cancer with ages ranging from 18 years to 94 years with a median of 50 years. Of these, 888 (40.5%) were EBCs Stage I and II, 833 (38%) were LABCs (Stage III), and 471 (21.5%) were de novo metastatic or relapsed cancers at presentation. The 5-year DFS in the women with EBC was 85.5% and in LABC, it was 67.7%, P < 0.001. The factors adversely affecting DFS in EBC were node metastasis (P < 0.001), higher metastatic nodes (P < 0.001), hormone receptor negativity (P = 0.001), and human epidermal growth factor receptor 2 (Her2neu) positivity (P = 0.033). In the multivariate Cox regression analysis in EBC, node-positive status (hazard ratio [HR] 2.28, 95% confidence interval [CI] 1.51-3.45, P < 0.001) and hormone receptor negative tumors (HR 1.96, 95% CI 1.30-2.94, P = 0.001) significantly affected DFS in EBC. The factors adversely affecting DFS in LABC in the univariate analysis were node metastasis (P < 0.001), increasing numbers of nodes (P < 0.001), presence of lymphovascular emboli (LVE) (P < 0.01), mastectomy (P < 0.001), and Her2neu positivity (P = 0.03). In the multivariate Cox regression analysis, node positivity (HR 2.96, 95% CI 2.04-4.29, P < 0.0001), presence of LVE (HR 1.47, 95% CI 1.06-2.04, P = 0.023), and mastectomy (HR 1.49, 95% CI 1.06-2.10, P = 0.023) adversely impacted DFS in LABC.The survival rates in this study are equal to the documented global rates; nodal disease burden emerged as the most important prognostic factor. In addition, in EBCs, a lack of hormone receptor expression and in LABC, Her2neu overexpression appear to worsen the outcome.